In Florida, 18 is the age of majority. Once you turn 18, you are legally an adult and can move out without parental permission. The only exceptions involve court-ordered guardianship or specific legal disabilities.
Florida Statute 743.07 confirms that persons 18 and older have the same legal rights as adults, including the right to choose their residence. The statute mentioned in some sources (743.065) addresses emancipation of minors who are victims of human trafficking—not typical 18-year-olds.
If you’re 18, you don’t need permission. You do need a plan: income, housing, and budgeting.